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Then ideology needs to give way

Ever since college I have been a libertarian—socially liberal and fiscally conservative. I believe in individual liberty and personal responsibility. I also believe in science as the greatest instrument ever devised for understanding the world. So what happens when these two principles are in conflict? My libertarian beliefs have not always served me well. Like most people who hold strong ideological convictions, I find that, too often, my beliefs trump the scientific facts. This is called motivated reasoning, in which our brain reasons our way to supporting what we want to be true. Knowing about the existence of motivated reasoning, however, can help us overcome it when it is at odds with evidence.

Take gun control. I always accepted the libertarian position of minimum regulation in the sale and use of firearms because I placed guns under the beneficial rubric of minimal restrictions on individuals. Then I read the science on guns and homicides, suicides and accidental shootings (summarized in my May column) and realized that the freedom for me to swing my arms ends at your nose. The libertarian belief in the rule of law and a potent police and military to protect our rights won’t work if the citizens of a nation are better armed but have no training and few restraints. Although the data to convince me that we need some gun-control measures were there all along, I had ignored them because they didn’t fit my creed. In several recent debates with economist John R. Lott, Jr., author of More Guns, Less Crime, I saw a reflection of my former self in the cherry picking and data mining of studies to suit ideological convictions. We all do it, and when the science is complicated, the confirmation bias (a type of motivated reasoning) that directs the mind to seek and find confirming facts and ignore disconfirming evidence kicks in. (continue reading…)

Why terror doesn’t work

Because terrorism educes such strong emotions, it has led to at least five myths. The first began in September 2001, when President George W. Bush announced that “we will rid the world of the evildoers” and that they hate us for “our freedoms.” This sentiment embodies what Florida State University psychologist Roy Baumeister calls “the myth of pure evil,” which holds that perpetrators commit pointless violence for no rational reason.

This idea is busted through the scientific study of aggression, of which psychologists have identified four types that are employed toward a purposeful end (from the perpetrators’ perspective): instrumental violence, such as plunder, conquest and the elimination of rivals; revenge, such as vendettas against adversaries or self-help justice; dominance and recognition, such as competition for status and women, particularly among young males; and ideology, such as religious beliefs or utopian creeds. Terrorists are motivated by a mixture of all four. (continue reading…)